Variables Quiz

What is an independent variable?

• A variable that is manipulated or controlled by the researcher in an experiment.

• A variable that is determined by chance in an experiment.

• A variable that is not relevant to the experiment.

• A variable that is measured or observed in an experiment.

What is a dependent variable?

• A dependent variable is the variable that is manipulated or changed in an experiment or study.

• A dependent variable is the variable that is not affected by the independent variable in an experiment or study.

• A dependent variable is the variable being measured or observed in an experiment or study.

• A dependent variable is the variable that is controlled by the researcher in an experiment or study.

Which variable is manipulated or changed by the researcher in an experiment?

• confounding variable

• control variable

• independent variable

• dependent variable

Which variable is measured or observed in an experiment?

• control variable

• dependent variable

• independent variable

• extraneous variable

In a study investigating the effect of temperature on plant growth, what is the independent variable?

• temperature

• water availability

• soil pH

• light intensity

In a study investigating the effect of temperature on plant growth, what is the dependent variable?

• amount of sunlight

• temperature

• plant growth

• soil pH

Give an example of an independent variable in a study about the effect of exercise on heart rate.

• age of the participant

• amount or intensity of exercise

• time of day the exercise is performed

• type of exercise equipment used

Give an example of a dependent variable in a study about the effect of exercise on heart rate.

• Muscle strength

• Heart rate

• Blood pressure

• Body temperature